persistent pollutant

Upload: bethany-n-bella

Post on 03-Jun-2018

212 views

Category:

Documents


0 download

TRANSCRIPT

  • 8/12/2019 Persistent Pollutant

    1/2

    By Bethany Bella Fiery columns of smoke and

    ames are remnants of a memory

    that I carry from the BP Gulf of

    Mexico oil spill back in 2010. I

    remember the devastation, the

    incredible loss of aquatic biodi-

    versity, the insurmountable gal-

    lons of oil leaking unto beaches,

    cloaking itself in seagulls, sea

    otters, dolphins, and more. Its

    hard to forget Americas most

    infamous oil spill in history when

    youre an environmental advo-

    cate.

    While this 87-day oil leak-

    age from the Deepwater Horizon

    oil rig is one of the most jarring

    environmental tragedies that has

    occurred within the past decade,

    another highly-catastrophic oil

    spill and its repercussions are still

    surfacing some 25 years later

    theExxon Valdez oil spill.

    Alaskas Prince William

    Sound was blanketed with almost

    11 million gallons of crude oil on

    March 24, 1989. Countless num-

    bers of sea creatures drowned in

    waters thick with crude thou-

    sands of otters perished, hundreds

    of thousands of birds were killed,

    while almost 1,200 miles of

    shoreline were splattered with the

    spills belching excess. It was a

    dark day for environmental stew-

    ards across the globe.

    As the quarter-century anni-

    versary dawns this spring, chemi-

    cal analysts are again investigat-

    ing the once-pristine oceanic

    habitat. Their ndings are quite

    alarming: oil has retained a

    persistent presence in the Sound

    surroundings, clinging to rocks

    and boulders along the Alaskan

    coast for over 20 years. Surpris-

    ingly still, the oil contains almost

    the same chemical compounds

    as oil sampled 11 days after theinitial spill.

    Even after Exxon invested

    billions of dollars into Valdez

    cleanup, why are we still nd-

    ing this resource oating in the

    Alaskan shores of Kenai Fjords

    and Katmai National Parks and

    Preserves? Why has this par-

    ticular toxin pervaded all of our

    eradicating efforts?

    According to Gail Irvine, amarine ecologist with the U.S.

    Geological Survey and lead

    researcher of the Gulf of Alaska

    study, when the oil rst spilled

    from the tanker, it encountered

    seawater and formed a sludge-

    like mixture. This oil-soup has

    unique chemical qualities that

    allow it to resist degradation.

  • 8/12/2019 Persistent Pollutant

    2/2

    When oil forms into the

    foam, the outside is weather-

    ing, but the inside isnt. Its

    like mayonnaise left out on

    the counter. The surface will

    crust over, but the inside of the

    clump still looks like mayon-

    naise, Irvine said.

    This emulsion, with aid

    from crashing waves, coated

    rocks and boulders along the

    Prince William Sound after

    torrents of oil were depositedinto the Gulf. Because the

    boulders on the beaches dont

    move great amounts each year

    (less than 3.3 feet in 18 years),

    that stability is

    what has allowed

    the oil to persist,

    Irvine adds. Even

    after the coast was

    steam-cleaned,

    the oil managed to

    evade all additional

    forms of cleanup,

    including cleanup

    in recent years, with upgraded

    technologies and methods.

    The oil is continuing to

    leak out into the ocean from

    its boulder-shrouded conne,

    although marine biologists

    arent too concerned yet.

    Irvine and colleagues collected

    mussels near the boulder elds,

    testing them for oil contamina-

    tion. The analysts discovered

    low levels ofExxon Valdezoil

    in their tissues, although Irvinesaid, The levels are so low

    that it probably isnt a cause

    for concern for the animals.

    But its still there, still pollut-

    ing an ecosystem after years

    of dedicated oil-obliterating

    schemes.

    Irvine and her fellow re-searchers are aiming to make

    the public aware that freshly-

    spilled oil has the potential

    to linger in the environment

    long after man has deemed it

    clean. I can only imagine the

    onslaught of terrors that the

    BP oil is continuing to wreak

    on our oceans how long is

    this slippery substance goingto remain encased in oceanic

    habitats, or will it ever dete-

    riorate? Have we dumped too

    much into our big-blue drain to

    ush out all the pollutants?

    I sincerely hope this bleak

    surmise is not one of prophecy,

    merely one of ctional, dys-

    topian America. If those who

    are environmentally passionate

    act now in preventing futureoil spills form devastating sea

    waters, we can save our oceans

    for millions of years to come.

    Alaskan waters shortly after

    theExxon Valdezoil spill,

    1989.

    Marine animals

    coated in the oil

    -Exxonaftermath.